I wish crack was legal and was contained in every type of potato and rice

You just need to work around da rules

Technically not. There are habits, which are mental, and then there are chemical addictions.

Regardless, you could simply wish for crack to magically appear in everyone’s blood stream in a constant pace for the next week, then turn it off suddenly, and watch everyone (except the crackheads with a stash) go through hell together.